Answer:
63.62 ft²
Step-by-step explanation:
Area of a square is given by b*b=b²
Where b is the measurement of any side
Given area of 81 ft² then to get b, we get rhe squareroot
b²=81
b=√81=9
This 9 is the diameter of rhe circular area that mulch covers.
Radius is half the diameter hence 0.5*9=4.5 ft
The area of circle will be given by
A=πr²
Substituting 4.5 in for r then
A=π*4.5²=63.6172512351933 ft²
Rounded off as 63.62 ft²
